October 15, 2012 2:00pm EDTOctober 15, 2012 1:53pm EDTBaltimore Ravens starting cornerback Lardarius Webb is out for the rest of the season with a torn anterior cruciate ligament in his right knee, ESPN reports.

Baltimore Ravens starting cornerback Lardarius Webb is out for the rest of the season with a torn anterior cruciate ligament in his right knee, ESPN reports.

It's a huge loss for a defense having some issues against the pass (No. 23 in the NFL) to lose its top cover man. In addition to bringing top speed, athleticism and technique in shutting down opponents' top receivers, Webb is also an excellent run-support player and blitzer.

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Webb was hurt in the first quarter of the Ravens' 31-29 win over Dallas after colliding with Cowboys wide receiver Dez Bryant while in outside coverage. Jimmy Smith, a 2011 first-round pick, who replaced Webb during the game, will remain in the starting lineup opposite Cary Williams.

It was a tough Sunday for the Ravens defense, beyond them getting run over by the Cowboys' rushing attack and giving up two late touchdown passes to Bryant (without Webb) that put Dallas on the brink of tying the game.

Linebacker Ray Lewis suffered a troublesome triceps injury, and defensive lineman Haloti Ngata sprained his knee. With Terrell Suggs on the shelf with an Achilles' injury, Lewis, Ngata and Ed Reed are the marquee names in Baltimore's defense, but Webb had joined them in becoming an invaluable part of their scheme.